Hemingray Insulator Profile: CD 131.4  
This is basically Hemingray #1, one of their earliest insulators produced. Threadless specimens of this style have also been found (CD 732.2). Based on research by Glenn Drummond, it is believed that the unembossed 131.4's are also Hemingray products and predate the embossed versions.  

Dimensions: 4" H x 3" W
• PATENT - DEC. 19, 1871
Years Produced:
Style Number:1
Rarity Scale (1-10): Very Uncommon (6)
Known Embossings (2) Collapse
NO EMBOSSING [010] [No embossing] SB Photo
PATENT - DEC. 19, 1871 [010] (F-Crown) PATENT/DEC.19.1871 (R-Crown) 1 SB Photo

The following embossings were removed from the price guide because they could not be verified to exist:

Unverified Embossings
Year Removed

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